mirror of
https://github.com/netfun2000/lcd4linux.git
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30a3698933
updated LCD-Linux driver to version 0.8.9 git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@579 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/* lcd.h
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*
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* $Id: drv_LCDLinux.h,v 1.5 2005/06/15 05:24:35 reinelt Exp $
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*
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* LCD driver for HD44780 compatible displays connected to the parallel port.
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*
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* External interface header file.
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*
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* Copyright (C) 2004, 2005 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef LCD_LINUX_H
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#define LCD_LINUX_H
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#ifndef HD44780_MAIN
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#warning
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#warning LCD-Linux is still in development stage and
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#warning aims at speed and optimization. For these
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#warning reasons there is no guarantee of backward
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#warning compatibility between different LCD-Linux
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#warning versions. Be sure to use the lcd-linux.h
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#warning file of the same version as the module.
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#warning
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#endif
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#define LCD_LINUX_VERSION "0.8.9-CVS" /* Version number */
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#define LCD_MAJOR 120 /* Major number for this device
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* Set this to 0 for dynamic allocation
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*/
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#include <linux/types.h>
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struct lcd_driver {
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/* Hardware */
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unsigned short io; /* Parport base address */
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unsigned short flags; /* Flags (see Documentation) */
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/* Display geometry */
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unsigned short num_cntr; /* Number of available controllers */
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unsigned short cntr_rows; /* Rows per controller */
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unsigned short disp_cols; /* Columns */
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unsigned short frames; /* Framebuffer frames */
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unsigned short tabstop; /* Length of tab character */
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};
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/* IOCTLs */
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#include <asm/ioctl.h>
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#define IOCTL_SET_PARAM _IOW(LCD_MAJOR, 0, struct lcd_driver *)
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#define IOCTL_GET_PARAM _IOR(LCD_MAJOR, 1, struct lcd_driver *)
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#define IOCTL_RAW_CMD _IOW(LCD_MAJOR, 2, unsigned char *)
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#define IOCTL_RESET_CHARMAP _IOW(LCD_MAJOR, 3, void *)
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#define IOCTL_SAVE_CHARMAP _IOW(LCD_MAJOR, 4, void *)
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#define IOCTL_RESTORE_CHARMAP _IOW(LCD_MAJOR, 5, void *)
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#define IOCTL_SWAP_CHARMAP _IOW(LCD_MAJOR, 6, void *)
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#define LCD_CHECK_BF 0x0001 /* Do busy flag checking */
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#define LCD_CONSOLE 0x0002 /* Enable the console support */
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#define LCD_4BITS_BUS 0x0004 /* Set the bus length to 4 bits */
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#define LCD_5X10_FONT 0x0008 /* Use 5x10 dots fonts */
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#ifdef __KERNEL__ /* The rest is for kernel only */
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#include <linux/version.h>
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#ifndef KERNEL_VERSION
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#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
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#endif
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#ifndef LINUX_VERSION_CODE
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#error - LINUX_VERSION_CODE undefined.
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#endif
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/* External interface */
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int lcd_init(struct lcd_driver *);
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void lcd_exit(void);
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int lcd_ioctl(unsigned int, void *);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
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ssize_t lcd_write(const char *, size_t, unsigned int);
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ssize_t lcd_read(char *, size_t, unsigned int);
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#else
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int lcd_write(const char *, int, unsigned int);
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int lcd_read(char *, int, unsigned int);
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#endif
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#endif /* __KERNEL__ */
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#endif /* External interface included */
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